diff --git a/actions/ost-compare-ligand-structures b/actions/ost-compare-ligand-structures
index a8e314ed659c88ea6923cc7739ec00b77e3d0383..a9eb8c72b29fc263b2018d4e9963172ddfe9eeba 100644
--- a/actions/ost-compare-ligand-structures
+++ b/actions/ost-compare-ligand-structures
@@ -169,7 +169,7 @@ def _ParseArgs():
         dest="rmsd",
         default=False,
         action="store_true",
-        help=("Compute RMSD score and store as key \"lddt-pli\"."))
+        help=("Compute RMSD score and store as key \"rmsd\"."))
 
     parser.add_argument(
         "--radius",